
Blood samples will be taken prior to your next vaccination if possible, and then 1 and 6 months after each vaccine dose. 
Participants may also submit saliva samples every other week for 6 months to test for COVID-19 after vaccination. 
The study can be completed remotely, and at-home blood collection kits and saliva sample kits can be mailed to you. 
Individuals can still participate if they have started or completed vaccination; sampling will begin at the next relevant timepoint.